Mercurial > sdl-ios-xcode
annotate include/SDL_mouse.h @ 638:b0108e9dea53
Date: Sun, 11 May 2003 19:59:06 +0300
From: Pasi K?rkk?inen
Subject: [PATCH] fix SDL OpenGL segfault with DRI/Mesa drivers and Glew
Hello!
The attached patch fixes a bug in SDL which causes SDL to crash in
X11_GL_Shutdown() if you are using DRI/Mesa drivers AND glew
(http://glew.sf.net).
The bug is caused by a namespace collision affecting dlsym() to fetch wrong
pointer for glXReleaseBuffersMESA() (uninitialized pointer from glew because
the extension is NOT supported by the driver) and then SDL calling it in
X11_GL_Shutdown().
SDL should check if the glXReleaseBuffersMESA() is really supported by the
driver (from the extensions string) before calling it.
Attached patch adds extension string parsing to check if
glXReleaseBuffersMESA() is really supported (and this way
prevents the segfault).
Availability of the extensions should be _always_ checked from the
extensions string rather than using dlsym()!
Please add it to the next version of SDL.
Thanks to gltron and author of glew to help fixing this.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 28 Jun 2003 17:27:33 +0000 |
| parents | 24edec3cafe4 |
| children | b8d311d90021 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2002
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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Updated the headers with the correct e-mail address
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* Include file for SDL mouse event handling */ | |
| 29 | |
| 30 #ifndef _SDL_mouse_h | |
| 31 #define _SDL_mouse_h | |
| 32 | |
| 33 #include "SDL_types.h" | |
| 34 #include "SDL_video.h" | |
| 35 | |
| 36 #include "begin_code.h" | |
| 37 /* Set up for C function definitions, even when using C++ */ | |
| 38 #ifdef __cplusplus | |
| 39 extern "C" { | |
| 40 #endif | |
| 41 | |
| 42 typedef struct WMcursor WMcursor; /* Implementation dependent */ | |
| 43 typedef struct { | |
| 44 SDL_Rect area; /* The area of the mouse cursor */ | |
| 45 Sint16 hot_x, hot_y; /* The "tip" of the cursor */ | |
| 46 Uint8 *data; /* B/W cursor data */ | |
| 47 Uint8 *mask; /* B/W cursor mask */ | |
| 48 Uint8 *save[2]; /* Place to save cursor area */ | |
| 49 WMcursor *wm_cursor; /* Window-manager cursor */ | |
| 50 } SDL_Cursor; | |
| 51 | |
| 52 /* Function prototypes */ | |
| 53 /* | |
| 54 * Retrieve the current state of the mouse. | |
| 55 * The current button state is returned as a button bitmask, which can | |
| 56 * be tested using the SDL_BUTTON(X) macros, and x and y are set to the | |
| 57 * current mouse cursor position. You can pass NULL for either x or y. | |
| 58 */ | |
|
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59 extern DECLSPEC Uint8 SDLCALL SDL_GetMouseState(int *x, int *y); |
| 0 | 60 |
| 61 /* | |
| 62 * Retrieve the current state of the mouse. | |
| 63 * The current button state is returned as a button bitmask, which can | |
| 64 * be tested using the SDL_BUTTON(X) macros, and x and y are set to the | |
| 65 * mouse deltas since the last call to SDL_GetRelativeMouseState(). | |
| 66 */ | |
|
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67 extern DECLSPEC Uint8 SDLCALL SDL_GetRelativeMouseState(int *x, int *y); |
| 0 | 68 |
| 69 /* | |
| 70 * Set the position of the mouse cursor (generates a mouse motion event) | |
| 71 */ | |
|
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72 extern DECLSPEC void SDLCALL SDL_WarpMouse(Uint16 x, Uint16 y); |
| 0 | 73 |
| 74 /* | |
| 75 * Create a cursor using the specified data and mask (in MSB format). | |
| 76 * The cursor width must be a multiple of 8 bits. | |
| 77 * | |
| 78 * The cursor is created in black and white according to the following: | |
| 79 * data mask resulting pixel on screen | |
| 80 * 0 1 White | |
| 81 * 1 1 Black | |
| 82 * 0 0 Transparent | |
| 83 * 1 0 Inverted color if possible, black if not. | |
| 84 * | |
| 85 * Cursors created with this function must be freed with SDL_FreeCursor(). | |
| 86 */ | |
|
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parents:
297
diff
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87 extern DECLSPEC SDL_Cursor * SDLCALL SDL_CreateCursor |
| 0 | 88 (Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y); |
| 89 | |
| 90 /* | |
| 91 * Set the currently active cursor to the specified one. | |
| 92 * If the cursor is currently visible, the change will be immediately | |
| 93 * represented on the display. | |
| 94 */ | |
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parents:
297
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95 extern DECLSPEC void SDLCALL SDL_SetCursor(SDL_Cursor *cursor); |
| 0 | 96 |
| 97 /* | |
| 98 * Returns the currently active cursor. | |
| 99 */ | |
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Explicitly specify the SDL API calling convention (C by default)
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parents:
297
diff
changeset
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100 extern DECLSPEC SDL_Cursor * SDLCALL SDL_GetCursor(void); |
| 0 | 101 |
| 102 /* | |
| 103 * Deallocates a cursor created with SDL_CreateCursor(). | |
| 104 */ | |
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Explicitly specify the SDL API calling convention (C by default)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
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105 extern DECLSPEC void SDLCALL SDL_FreeCursor(SDL_Cursor *cursor); |
| 0 | 106 |
| 107 /* | |
| 108 * Toggle whether or not the cursor is shown on the screen. | |
| 109 * The cursor start off displayed, but can be turned off. | |
| 110 * SDL_ShowCursor() returns 1 if the cursor was being displayed | |
| 111 * before the call, or 0 if it was not. You can query the current | |
| 112 * state by passing a 'toggle' value of -1. | |
| 113 */ | |
|
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Explicitly specify the SDL API calling convention (C by default)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
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114 extern DECLSPEC int SDLCALL SDL_ShowCursor(int toggle); |
| 0 | 115 |
| 116 /* Used as a mask when testing buttons in buttonstate | |
| 117 Button 1: Left mouse button | |
| 118 Button 2: Middle mouse button | |
| 119 Button 3: Right mouse button | |
|
451
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Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
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120 Button 4: Mouse wheel up (may also be a real button) |
|
24edec3cafe4
Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
Sam Lantinga <slouken@libsdl.org>
parents:
337
diff
changeset
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121 Button 5: Mouse wheel down (may also be a real button) |
| 0 | 122 */ |
| 123 #define SDL_BUTTON(X) (SDL_PRESSED<<(X-1)) | |
| 124 #define SDL_BUTTON_LEFT 1 | |
| 125 #define SDL_BUTTON_MIDDLE 2 | |
| 126 #define SDL_BUTTON_RIGHT 3 | |
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451
24edec3cafe4
Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
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127 #define SDL_BUTTON_WHEELUP 4 |
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24edec3cafe4
Added SDL_BUTTON_WHEELUP (4) and SDL_BUTTON_WHEELDOWN (5)
Sam Lantinga <slouken@libsdl.org>
parents:
337
diff
changeset
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128 #define SDL_BUTTON_WHEELDOWN 5 |
| 0 | 129 #define SDL_BUTTON_LMASK SDL_BUTTON(SDL_BUTTON_LEFT) |
| 130 #define SDL_BUTTON_MMASK SDL_BUTTON(SDL_BUTTON_MIDDLE) | |
| 131 #define SDL_BUTTON_RMASK SDL_BUTTON(SDL_BUTTON_RIGHT) | |
| 132 | |
| 133 | |
| 134 /* Ends C function definitions when using C++ */ | |
| 135 #ifdef __cplusplus | |
| 136 } | |
| 137 #endif | |
| 138 #include "close_code.h" | |
| 139 | |
| 140 #endif /* _SDL_mouse_h */ |